springboot+nacosValue list, spri

安装及试用

https://github.com/alibaba/nacos/releases
放到指定目录

tar -xvf  nacos.tar.gz

启动

sh startup.sh -m standalone

用户名 nacos，密码 nacos

[http://10.202.xx.xx:8848/nacos](http://10.202.xx.xx:8848/nacos)

springboot + nacos集成

动态配置管理

新建配置

Data Id ： example
Group：DEFAULT_GROUP
配置内容：validate.on=true

依赖
spring + nacos开启登录403 unknow user， 需要升级1.2.1，
参考https://github.com/nacos-group/nacos-spring-project/issues/209

以及

// Springboot
compile group: 'com.alibaba.boot', name: 'nacos-config-spring-boot-starter', version: '0.2.6'
//spring
<dependency>
          <groupId>com.alibaba.nacos</groupId>
          <artifactId>nacos-spring-context</artifactId>
          <version>0.3.6</version>
          <exclusions>
              <exclusion>
                  <groupId>com.alibaba.nacos</groupId>
                  <artifactId>nacos-client</artifactId>
              </exclusion>
          </exclusions>
      </dependency>
      <dependency>
          <groupId>com.alibaba.nacos</groupId>
          <artifactId>nacos-client</artifactId>
          <version>1.2.1</version>
      </dependency>

code

nacos.config.server-addr=ip:8848
nacos.config.namespace=xxx

@SpringBootApplication
@NacosPropertySource(dataId = "example", groupId="dev",autoRefreshed = true)
public class BrokerApplication {
    public static void main(String[] args) {
        SpringApplication.run(BrokerApplication.class, args);
    }
}

注入: 类似value ，

    //@Value("${validate.on}")
    @NacosValue(value = "${validate.on:true}", autoRefreshed = true)
    private Boolean validateOn;

private Set<String> rangeSet;//  注入集合场景
    @NacosValue(value = "${range_set}", autoRefreshed = true)
    public void setRange(String source){
         rangeSet = Arrays.stream(source.split(",")).collect(Collectors.toSet()); ;
    }
    public  Set<String> getRangeSet(){
        return rangeSet;
    }

//    
//    private Boolean validateOn;

可能你觉得配置放缓存中也解决了，缓存中需要每次读一下，这可自动刷入啊

服务发现

创建服务列表

服务名 ： example
保护阈值：1
元数据：

注册服务到nacos

curl -X PUT '10.202..xx.xx:8848/nacos/v1/ns/instance?serviceName=example&ip=127.0.0.1&port=8080'

依赖

compile group: 'com.alibaba.boot', name: 'nacos-discovery-spring-boot-starter', version: '0.2.6'

查询

@Controller
@RequestMapping("/discovery")
public class NacosDiscoverControlelr {
    @NacosInjected
    private NamingService namingService;
    @RequestMapping(value = "/get")
    @ResponseBody
    public List<Instance> get(@RequestParam String serviceName) throws NacosException {
        return namingService.getAllInstances(serviceName);
    }
}

查看结果http://localhost:8080/discovery/get?serviceName=example

[
    {
        "instanceId":"127.0.0.1#8080#DEFAULT#DEFAULT_GROUP@@example",
        "ip":"127.0.0.1",
        "port":8080,
        "weight":1,
        "healthy":true,
        "enabled":true,
        "ephemeral":true,
        "clusterName":"DEFAULT",
        "serviceName":"DEFAULT_GROUP@@example",
        "metadata":{

        },
        "instanceHeartBeatInterval":5000,
        "instanceHeartBeatTimeOut":15000,
        "ipDeleteTimeout":30000,
        "instanceIdGenerator":"simple"
    }
]